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Fathom Macroeconomic Data API — Vintage Dates
x402
Fathom Macroeconomic Data API — Vintage Dates is a paid API for AI agents from fredthom.vercel.app, paid per call via x402, $0.4/call, status unknown (last checked 2026-09-15).
Retrieves vintage dates for a FRED economic time series, showing when historical data revisions were published
Price / call$0.4
Success—
StatusUnknown
How this service works
Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.
Output
Returns an object containing the source identifier, the FRED series ID, and an array of vintage date objects representing the dates on which data revisions for that series were released
Example use cases
Example prompt
“Using the Fathom FRED-powered API, fetch the vintage dates for the GDP series (series ID: GDP) and return up to 20 results so I can see when historical revisions were published.”
Technical details
Endpoint
POSThttps://fredthom.vercel.app/api/vintageWhen to prefer
Use this endpoint when you need to know the specific dates on which a FRED economic time series was revised or updated — i.e., vintage dates — rather than the actual data values themselves. Ideal for researchers doing real-time data analysis, backtesting economic models with point-in-time data, or auditing when macroeconomic indicators were revised.
Side effects
- Invalid or unknown FRED series ID returns an error or empty vintage_dates array
- Missing required seriesId parameter causes a 400-level validation error
- Network or Vercel hosting timeout on large series with many vintages
- Limit parameter ignored or misformatted may return default 10 results silently
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | string | Max results (default: 10) |
| seriesIdrequired | string | FRED series ID |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| sourcerequired | string | |
| series_id | string | |
| vintage_dates | array |
Tags
x402
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